28125225

素因数分解:

$3^4\times 5^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1$

素因数の和:101

約数の個数: 120

約数和(自身を含む): 59415840

約数和(自身を除く): 31290615

約数列:

[1, 3, 5, 9, 15, 17, 19, 25, 27, 43, 45, 51, 57, 75, 81, 85, 95, 129, 135, 153, 171, 215, 225, 255, 285, 323, 387, 405, 425, 459, 475, 513, 645, 675, 731, 765, 817, 855, 969, 1075, 1161, 1275, 1377, 1425, 1539, 1615, 1935, 2025, 2193, 2295, 2451, 2565, 2907, 3225, 3483, 3655, 3825, 4085, 4275, 4845, 5805, 6579, 6885, 7353, 7695, 8075, 8721, 9675, 10965, 11475, 12255, 12825, 13889, 14535, 17415, 18275, 19737, 20425, 22059, 24225, 26163, 29025, 32895, 34425, 36765, 38475, 41667, 43605, 54825, 59211, 61275, 66177, 69445, 72675, 87075, 98685, 110295, 125001, 130815, 164475, 183825, 208335, 218025, 296055, 330885, 347225, 375003, 493425, 551475, 625005, 654075, 1041675, 1125009, 1480275, 1654425, 1875015, 3125025, 5625045, 9375075, 28125225]

約数ペア:

[(1, 28125225), (3, 9375075), (5, 5625045), (9, 3125025), (15, 1875015), (17, 1654425), (19, 1480275), (25, 1125009), (27, 1041675), (43, 654075), (45, 625005), (51, 551475), (57, 493425), (75, 375003), (81, 347225), (85, 330885), (95, 296055), (129, 218025), (135, 208335), (153, 183825), (171, 164475), (215, 130815), (225, 125001), (255, 110295), (285, 98685), (323, 87075), (387, 72675), (405, 69445), (425, 66177), (459, 61275), (475, 59211), (513, 54825), (645, 43605), (675, 41667), (731, 38475), (765, 36765), (817, 34425), (855, 32895), (969, 29025), (1075, 26163), (1161, 24225), (1275, 22059), (1377, 20425), (1425, 19737), (1539, 18275), (1615, 17415), (1935, 14535), (2025, 13889), (2193, 12825), (2295, 12255), (2451, 11475), (2565, 10965), (2907, 9675), (3225, 8721), (3483, 8075), (3655, 7695), (3825, 7353), (4085, 6885), (4275, 6579), (4845, 5805)]